/**
* Attempts to find a preview size that matches the provided width and height (which specify the
* dimensions of the encoded video). If it fails to find a match it just uses the default preview
* size.
*
* <p>TODO: should do a best-fit match.
*/
private static void choosePreviewSize(Camera.Parameters parms, int width, int height) {
// We should make sure that the requested MPEG size is less than the preferred
// size, and has the same aspect ratio.
Camera.Size ppsfv = parms.getPreferredPreviewSizeForVideo();
if (ppsfv != null) {
Log.d(TAG, "Camera preferred preview size for video is " + ppsfv.width + "x" + ppsfv.height);
}
// for (Camera.Size size : parms.getSupportedPreviewSizes()) {
// Log.d(TAG, "supported: " + size.width + "x" + size.height);
// }
for (Camera.Size size : parms.getSupportedPreviewSizes()) {
if (size.width == width && size.height == height) {
parms.setPreviewSize(width, height);
return;
}
}
Log.w(TAG, "Unable to set preview size to " + width + "x" + height);
if (ppsfv != null) {
parms.setPreviewSize(ppsfv.width, ppsfv.height);
}
// else use whatever the default size is
}
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
@Override
public ISize setPreviewSize(int width, int height) {
Camera camera = getCamera();
Camera.Parameters parameters = camera.getParameters();
List<android.hardware.Camera.Size> sizes = camera.getParameters().getSupportedPictureSizes();
android.hardware.Camera.Size maxSize = sizes.get(0);
if (getActualPropertyMap().containsKey("desiredWidth")
|| getActualPropertyMap().containsKey("desiredHeight")) {
int desired_width = Integer.parseInt(getActualPropertyMap().get("desiredWidth"));
int desired_height = Integer.parseInt(getActualPropertyMap().get("desiredHeight"));
if (desired_width > 0
&& desired_width <= maxSize.width
&& desired_height > 0
&& desired_height <= maxSize.height) {
Camera.Size previewSize =
getOptimalPreviewSize(
parameters.getSupportedPictureSizes(), desired_width, desired_height);
Logger.T(TAG, "Selected size: " + previewSize.width + "x" + previewSize.height);
parameters.setPreviewSize(previewSize.width, previewSize.height);
} else if (desired_width > maxSize.width || desired_height > maxSize.height) {
final Camera.Parameters newParam = parameters;
final android.hardware.Camera.Size newMaxSize = sizes.get(0);
RhodesActivity.safeGetInstance()
.runOnUiThread(
new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
newParam.setPreviewSize(newMaxSize.width, newMaxSize.height);
}
});
} else {
parameters.setPreviewSize(320, 240);
}
} else {
Camera.Size previewSize =
getOptimalPreviewSize(parameters.getSupportedPictureSizes(), width, height);
Logger.T(TAG, "Selected size: " + previewSize.width + "x" + previewSize.height);
parameters.setPreviewSize(previewSize.width, previewSize.height);
}
camera.stopPreview();
try {
camera.setParameters(parameters);
} catch (RuntimeException e) {
e.printStackTrace();
}
camera.startPreview();
return new CameraSize(camera.getParameters().getPreviewSize());
}
private void setupCamera() {
Camera.Parameters parameters = mCamera.getParameters();
List<Camera.Size> sizes = mCamera.getParameters().getSupportedPreviewSizes();
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
Resources stringResources = getResources();
int cameraIndex =
Integer.decode(
prefs.getString(stringResources.getString(R.string.shared_prefs_camera_list), "0"));
int cameraResolutionsIndex =
Integer.decode(
prefs.getString(
String.format(
stringResources.getString(R.string.shared_prefs_camera_resolution_key),
cameraIndex),
"0"));
Camera.Size list = sizes.get(cameraResolutionsIndex);
mPreviewWidth = list.width;
mPreviewHeight = list.height;
parameters.setPreviewFrameRate(30);
parameters.setPreviewSize(mPreviewWidth, mPreviewHeight);
setCameraFocusMode(parameters);
setCameraWhiteBalanceMode(parameters);
try {
mCamera.setParameters(parameters);
} catch (RuntimeException re) {
re.printStackTrace();
Log.e(TAG, "Unable to set Camera Parameters");
Log.i(TAG, "Falling back to setting just the camera preview");
parameters = mCamera.getParameters();
parameters.setPreviewSize(mPreviewWidth, mPreviewHeight);
try {
mCamera.setParameters(parameters);
} catch (RuntimeException re2) {
re2.printStackTrace();
Log.e(
TAG,
"Problem with camera configuration, unable to set "
+ "Camera Parameters. Camera not available.");
}
}
mPreviewWidth = mCamera.getParameters().getPreviewSize().width;
mPreviewHeight = mCamera.getParameters().getPreviewSize().height;
}
@SuppressWarnings("deprecation")
public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
android.hardware.Camera.Parameters parameters = camera.getParameters();
List list;
float f;
list = Compatibility.getSupportedPreviewSizes(parameters);
f = (float) j / (float) k;
float f1;
int l;
int i1;
f1 = 0.0F;
l = 0;
i1 = 0;
Iterator iterator = list.iterator();
while (true) {
if (iterator.hasNext()) {
android.hardware.Camera.Size size = (android.hardware.Camera.Size) iterator.next();
float f2 = (float) size.width / (float) size.height;
if (f - f2 > f - f1) {
continue; /* Loop/switch isn't completed */
}
if (size.width > j || size.width < l) {
continue; /* Loop/switch isn't completed */
}
f1 = f2;
try {
l = size.width;
i1 = size.height;
continue; /* Loop/switch isn't completed */
} catch (Exception exception1) {
}
try {
parameters.setPreviewSize(480, 320);
camera.setParameters(parameters);
camera.startPreview();
return;
} catch (Exception exception) {
exception.printStackTrace();
}
return;
} else {
if (l == 0 || i1 == 0) {
l = 480;
i1 = 320;
}
parameters.setPreviewSize(l, i1);
break;
}
}
}
public void onSurfaceTextureAvailable(
SurfaceTexture paramSurfaceTexture, int paramInt1, int paramInt2) {
if (VideoCaptureFragment.h(a) == null) {
VideoCaptureFragment.a(a, Camera.open());
Object localObject1 = VideoCaptureFragment.h(a).getParameters();
Object localObject2 = VideoCaptureFragment.i(a);
Camera localCamera = VideoCaptureFragment.h(a);
localCamera.getClass();
localObject2 = new Camera.Size(localCamera, videoFrameWidth, videoFrameHeight);
if (((Camera.Parameters) localObject1).getSupportedPreviewSizes().contains(localObject2)) {
((Camera.Parameters) localObject1).setPreviewSize(width, height);
VideoCaptureFragment.h(a).setParameters((Camera.Parameters) localObject1);
}
localObject1 = ((Camera.Parameters) localObject1).getPreviewSize();
VideoCaptureFragment.a(a, width, height);
VideoCaptureFragment.h(a).setDisplayOrientation(VideoCaptureFragment.j(a));
try {
VideoCaptureFragment.h(a).setPreviewTexture(paramSurfaceTexture);
VideoCaptureFragment.h(a).startPreview();
paramSurfaceTexture = VideoCaptureFragment.h(a).getParameters().getSupportedFocusModes();
if (CameraWrangler.a(VideoCaptureFragment.h(a))) {
VideoCaptureFragment.h(a).autoFocus(null);
return;
}
if (paramSurfaceTexture.contains("continuous-video")) {
paramSurfaceTexture = VideoCaptureFragment.h(a).getParameters();
paramSurfaceTexture.setFocusMode("continuous-video");
VideoCaptureFragment.h(a).setParameters(paramSurfaceTexture);
return;
}
} catch (IOException paramSurfaceTexture) {
YelpLog.error(paramSurfaceTexture);
}
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
// open the camera
camera = Camera.open(1);
} catch (RuntimeException e) {
// check for exceptions
System.err.println(e);
return;
}
Camera.Parameters param;
param = camera.getParameters();
// modify parameter
param.setPreviewSize(352, 288);
camera.setParameters(param);
try {
// The Surface has been created, now tell the camera where to draw
// the preview.
camera.setPreviewDisplay(surfaceHolder);
camera.setDisplayOrientation(90);
camera.startPreview();
} catch (Exception e) {
// check for exceptions
System.err.println(e);
return;
}
}
private void initCamera() {
if (!isPreview) {
camera = Camera.open();
}
if (camera != null && !isPreview) {
streamIt = new StreamIt();
try {
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewSize(screenWidth, screenHeight); // 设置预览照片的大小
parameters.setPreviewFpsRange(20, 30); // 每秒显示20~30帧
parameters.setPictureFormat(ImageFormat.NV21); // 设置图片格式
parameters.setPictureSize(screenWidth, screenHeight); // 设置照片的大小
camera.setPreviewDisplay(surfaceHolder); // 通过SurfaceView显示取景画面
camera.setPreviewCallback(streamIt); // 设置回调的类
camera.startPreview(); // 开始预览
camera.autoFocus(null); // 自动对焦
} catch (Exception e) {
e.printStackTrace();
}
isPreview = true;
Thread postThread2 = new Thread(new postThread());
postThread2.start();
System.out.println("线程启动了@@@@@@@@@@@@@@@@@@@@@@@@@@");
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Log.e(TAG, "surfaceChanged => w=" + w + ", h=" + h);
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
if (mHolder.getSurface() == null) {
// preview surface does not exist
return;
}
// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e) {
// ignore: tried to stop a non-existent preview
}
// set preview size and make any resize, rotate or reformatting changes here
// start preview with new settings
try {
Camera.Parameters parameters = mCamera.getParameters();
/* INSERT ZOOM HERE */
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
parameters.setRotation(90);
mCamera.setParameters(parameters);
mCamera.setDisplayOrientation(90);
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (Exception e) {
Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (mHolder.getSurface() == null) {
// preview surface does not exist
return;
}
// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e) {
// ignore: tried to stop a non-existent preview
}
// Sets preview size.
Camera.Parameters parameters = mCamera.getParameters();
List<Camera.Size> sizes = parameters.getSupportedPreviewSizes();
Camera.Size cs = sizes.get(0);
parameters.setPreviewSize(cs.width, cs.height);
mCamera.setParameters(parameters);
// start preview with new settings
try {
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (Exception e) {
Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
Log.e(TAG, "SurfaceChanged.");
}
public void setupCameraParameters() {
Camera.Size optimalSize = getOptimalPreviewSize();
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(optimalSize.width, optimalSize.height);
mCamera.setParameters(parameters);
adjustViewSize(optimalSize);
}
/** 给摄像头设置好一系列相关参数，并开始预览 */
private void initCamera() {
azLog.log("isPreView", "" + isPreview);
if (mCamera != null && !isPreview) {
try {
Camera.Parameters parameters = mCamera.getParameters();
// 设置预览照片的大小
parameters.setPreviewSize(mPreviewWidth, mPreviewHeight);
// 设置预览照片时每秒显示多少帧的最小值和最大值
parameters.setPreviewFpsRange(mFrameMin, mFrameMax);
// 设置图片格式
parameters.setPictureFormat(mImageFormat);
// 设置JPG照片的质量
parameters.set("jpeg-quality", mImageQuality);
// 设置照片的大小
parameters.setPictureSize(mPictureWidth, mPictureHeight);
// 通过SurfaceView显示取景画面
mCamera.setPreviewDisplay(mSurfaceHolder);
// 开始预览
mCamera.startPreview();
azLog.log("AzCamera", "摄像头打开");
} catch (IOException e) {
e.printStackTrace();
}
isPreview = true;
}
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i2, int i3) {
Log.e("ok", "surfaceChanged => w=" + i2 + ", h=" + i3);
// before changing the application orientation, you need to stop the preview, rotate and then
// start it again
if (surfaceHolder.getSurface() == null) // check if the surface is ready to receive camera data
return;
try {
mCamera.stopPreview();
} catch (Exception e) {
// this will happen when you are trying the camera if it's not running
}
// now, recreate the camera preview
try {
Camera.Parameters parameters = mCamera.getParameters();
List<String> focusModes = parameters.getSupportedFocusModes();
if (focusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
}
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
mCamera.setParameters(parameters);
mCamera.setDisplayOrientation(90);
mCamera.startPreview(mHolder);
} catch (IOException e) {
Log.d("ERROR", "Camera error on surfaceChanged " + e.getMessage());
}
}
private void initPreview(int width, int height) {
if (camera != null && previewHolder.getSurface() != null) {
try {
camera.setPreviewDisplay(previewHolder);
} catch (Throwable t) {
}
if (!cameraConfigured) {
Camera.Parameters parameters = camera.getParameters();
Camera.Size size = getBestPreviewSize(width, height, parameters);
Camera.Size pictureSize = getLargestPictureSize(parameters);
if (size != null && pictureSize != null) {
if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_AUTO)) {
// set the focus mode
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
}
parameters.setPreviewSize(size.width, size.height);
parameters.setPictureSize(pictureSize.width, pictureSize.height);
parameters.setPictureFormat(ImageFormat.JPEG);
camera.setParameters(parameters);
cameraConfigured = true;
}
}
}
}
@SuppressLint("InlinedApi")
private static void setDesiredCameraParameters(
final Camera camera, final Camera.Size cameraResolution, final boolean continuousAutoFocus) {
final Camera.Parameters parameters = camera.getParameters();
if (parameters == null) return;
final List<String> supportedFocusModes = parameters.getSupportedFocusModes();
final String focusMode =
continuousAutoFocus
? findValue(
supportedFocusModes,
Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE,
Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO,
Camera.Parameters.FOCUS_MODE_AUTO,
Camera.Parameters.FOCUS_MODE_MACRO)
: findValue(
supportedFocusModes,
Camera.Parameters.FOCUS_MODE_AUTO,
Camera.Parameters.FOCUS_MODE_MACRO);
if (focusMode != null) parameters.setFocusMode(focusMode);
parameters.setPreviewSize(cameraResolution.width, cameraResolution.height);
camera.setParameters(parameters);
}
@Override
public void setPreviewHeight(int mPreviewHeight) {
this.mPreviewHeight = mPreviewHeight;
Camera.Parameters parameters = mCamera.getParameters();
// 设置预览照片的大小
parameters.setPreviewSize(mPreviewWidth, mPreviewHeight);
}
private int tryStartCapture(int width, int height, int frameRate) {
if (camera == null) {
Log.e(TAG, "Camera not initialized %d" + id);
return -1;
}
Log.d(
TAG,
"tryStartCapture: "
+ width
+ "x"
+ height
+ ", frameRate: "
+ frameRate
+ ", isCaptureRunning: "
+ isCaptureRunning
+ ", isSurfaceReady: "
+ isSurfaceReady
+ ", isCaptureStarted: "
+ isCaptureStarted);
if (isCaptureRunning || !isCaptureStarted) {
return 0;
}
CaptureCapabilityAndroid currentCapability = new CaptureCapabilityAndroid();
currentCapability.width = width;
currentCapability.height = height;
currentCapability.maxFPS = frameRate;
PixelFormat.getPixelFormatInfo(PIXEL_FORMAT, pixelFormat);
Camera.Parameters parameters = camera.getParameters();
parameters.setPreviewSize(currentCapability.width, currentCapability.height);
parameters.setPreviewFormat(PIXEL_FORMAT);
parameters.setPreviewFrameRate(currentCapability.maxFPS);
try {
camera.setParameters(parameters);
} catch (RuntimeException e) {
Log.e(TAG, "setParameters failed", e);
return -1;
}
int bufSize = width * height * pixelFormat.bitsPerPixel / 8;
byte[] buffer = null;
for (int i = 0; i < numCaptureBuffers; i++) {
buffer = new byte[bufSize];
camera.addCallbackBuffer(buffer);
}
camera.setPreviewCallbackWithBuffer(this);
ownsBuffers = true;
camera.startPreview();
previewBufferLock.lock();
expectedFrameSize = bufSize;
isCaptureRunning = true;
previewBufferLock.unlock();
return 0;
}
void setDesiredCameraParameters(Camera camera, boolean safeMode) {
Camera.Parameters parameters = camera.getParameters();
if (parameters == null) {
Log.w(
TAG,
"Device error: no camera parameters are available. Proceeding without configuration.");
return;
}
Log.i(TAG, "Initial camera parameters: " + parameters.flatten());
if (safeMode) {
Log.w(TAG, "In camera config safe mode -- most settings will not be honored");
}
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
initializeTorch(parameters, prefs, safeMode);
String focusMode = null;
if (prefs.getBoolean(PreferencesActivity.KEY_AUTO_FOCUS, true)) {
if (safeMode || prefs.getBoolean(PreferencesActivity.KEY_DISABLE_CONTINUOUS_FOCUS, false)) {
focusMode =
findSettableValue(
parameters.getSupportedFocusModes(), Camera.Parameters.FOCUS_MODE_AUTO);
} else {
focusMode =
findSettableValue(
parameters.getSupportedFocusModes(),
"continuous-picture", // Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE in 4.0+
"continuous-video", // Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO in 4.0+
Camera.Parameters.FOCUS_MODE_AUTO);
}
}
// Maybe selected auto-focus but not available, so fall through here:
if (!safeMode && focusMode == null) {
focusMode =
findSettableValue(
parameters.getSupportedFocusModes(),
Camera.Parameters.FOCUS_MODE_MACRO,
"edof"); // Camera.Parameters.FOCUS_MODE_EDOF in 2.2+
}
if (focusMode != null) {
parameters.setFocusMode(focusMode);
}
if (prefs.getBoolean(PreferencesActivity.KEY_INVERT_SCAN, false)) {
String colorMode =
findSettableValue(
parameters.getSupportedColorEffects(), Camera.Parameters.EFFECT_NEGATIVE);
if (colorMode != null) {
parameters.setColorEffect(colorMode);
}
}
parameters.setPreviewSize(cameraResolution.x, cameraResolution.y);
camera.setParameters(parameters);
}
// https://code.google.com/p/google-glass-api/issues/detail?id=232
public void googleGlassXE10WorkAround(Camera mCamera) {
Camera.Parameters params = mCamera.getParameters();
params.setPreviewFpsRange(30000, 30000);
params.setPreviewSize(640, 360);
mCamera.setParameters(params);
mCamera.setZoomChangeListener(this);
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// Now that the size is known, set up the camera parameters and begin
// the preview.
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(w, h);
mCamera.setParameters(parameters);
mCamera.startPreview();
}
private void setCameraParameters() {
mParameters = mCameraDevice.getParameters();
// mParameters.setPreviewSize(mViewFinderWidth, mViewFinderHeight);
mParameters.setPreviewSize(320, 240);
mCameraDevice.setParameters(mParameters);
}
/**
* Sets the camera up to take preview images which are used for both preview and decoding. We
* detect the preview format here so that buildLuminanceSource() can build an appropriate
* LuminanceSource subclass. In the future we may want to force YUV420SP as it's the smallest, and
* the planar Y can be used for barcode scanning without a copy in some cases.
*/
void setDesiredCameraParameters(Camera camera) {
Camera.Parameters parameters = camera.getParameters();
Log.d(TAG, "Setting preview size: " + cameraResolution);
parameters.setPreviewSize(cameraResolution.x, cameraResolution.y);
setFlash(parameters);
setZoom(parameters);
// setSharpness(parameters);
camera.setParameters(parameters);
}
void setDesiredCameraParameters(OpenCamera camera, boolean safeMode) {
Camera theCamera = camera.getCamera();
Camera.Parameters parameters = theCamera.getParameters();
// theCamera.setDisplayOrientation(90);//add 这句代码作用是旋转镜头90度，使相机预览方向正确显示
if (parameters == null) {
Log.w(
TAG,
"Device error: no camera parameters are available. Proceeding without configuration.");
return;
}
Log.i(TAG, "Initial camera parameters: " + parameters.flatten());
if (safeMode) {
Log.w(TAG, "In camera config safe mode -- most settings will not be honored");
}
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
initializeTorch(parameters, prefs, safeMode);
CameraConfigurationUtils.setFocus(parameters, true, true, safeMode);
if (!safeMode) {
CameraConfigurationUtils.setBarcodeSceneMode(parameters);
CameraConfigurationUtils.setVideoStabilization(parameters);
CameraConfigurationUtils.setFocusArea(parameters);
CameraConfigurationUtils.setMetering(parameters);
}
parameters.setPreviewSize(bestPreviewSize.x, bestPreviewSize.y);
theCamera.setParameters(parameters);
theCamera.setDisplayOrientation(cwRotationFromDisplayToCamera);
Camera.Parameters afterParameters = theCamera.getParameters();
Camera.Size afterSize = afterParameters.getPreviewSize();
if (afterSize != null
&& (bestPreviewSize.x != afterSize.width || bestPreviewSize.y != afterSize.height)) {
Log.w(
TAG,
"Camera said it supported preview size "
+ bestPreviewSize.x
+ 'x'
+ bestPreviewSize.y
+ ", but after setting it, preview size is "
+ afterSize.width
+ 'x'
+ afterSize.height);
bestPreviewSize.x = afterSize.width;
bestPreviewSize.y = afterSize.height;
}
}
void setDesiredCameraParameters(Camera paramCamera) {
Camera.Parameters localParameters = paramCamera.getParameters();
Log.d(TAG, "Setting preview size: " + this.cameraResolution);
localParameters.setPreviewSize(this.cameraResolution.x, this.cameraResolution.y);
setFlash(localParameters);
setZoom(localParameters);
setDisplayOrientation(paramCamera, 90);
paramCamera.setParameters(localParameters);
}
@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
Camera.Parameters parameters;
parameters = mCamera.getParameters();
// Set the camera preview size
parameters.setPreviewSize(PreviewSizeWidth, PreviewSizeHeight);
imageFormat = parameters.getPreviewFormat();
mCamera.setParameters(parameters);
mCamera.startPreview();
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
if (mCamera != null) {
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
requestLayout();
mCamera.setParameters(parameters);
mCamera.startPreview();
}
}
// Called by native code. Returns true if capturer is started.
//
// Note that this actually opens the camera, which can be a slow operation and
// thus might be done on a background thread, but ViE API needs a
// synchronous success return value so we can't do that.
private synchronized boolean startCapture(int width, int height, int min_mfps, int max_mfps) {
Log.d(TAG, "startCapture: " + width + "x" + height + "@" + min_mfps + ":" + max_mfps);
Throwable error = null;
try {
camera = Camera.open(id);
localPreview = ViERenderer.GetLocalRenderer();
if (localPreview != null) {
localPreview.addCallback(this);
if (localPreview.getSurface() != null && localPreview.getSurface().isValid()) {
camera.setPreviewDisplay(localPreview);
}
} else {
// No local renderer (we only care about onPreviewFrame() buffers, not a
// directly-displayed UI element). Camera won't capture without
// setPreview{Texture,Display}, so we create a dummy SurfaceTexture and
// hand it over to Camera, but never listen for frame-ready callbacks,
// and never call updateTexImage on it.
try {
// "42" because http://goo.gl/KaEn8
dummySurfaceTexture = new SurfaceTexture(42);
camera.setPreviewTexture(dummySurfaceTexture);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
Camera.Parameters parameters = camera.getParameters();
Log.d(TAG, "isVideoStabilizationSupported: " + parameters.isVideoStabilizationSupported());
if (parameters.isVideoStabilizationSupported()) {
parameters.setVideoStabilization(true);
}
parameters.setPreviewSize(width, height);
parameters.setPreviewFpsRange(min_mfps, max_mfps);
int format = ImageFormat.NV21;
parameters.setPreviewFormat(format);
camera.setParameters(parameters);
int bufSize = width * height * ImageFormat.getBitsPerPixel(format) / 8;
for (int i = 0; i < numCaptureBuffers; i++) {
camera.addCallbackBuffer(new byte[bufSize]);
}
camera.setPreviewCallbackWithBuffer(this);
camera.startPreview();
return true;
} catch (IOException e) {
error = e;
} catch (RuntimeException e) {
error = e;
}
Log.e(TAG, "startCapture failed", error);
if (camera != null) {
stopCapture();
}
return false;
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Camera.Parameters parameters = camera.getParameters();
Camera.Size size = getBestPreviewSize(width, height, parameters);
if (size != null) {
parameters.setPreviewSize(size.width, size.height);
camera.setParameters(parameters);
camera.startPreview();
inPreview = true;
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Camera.Parameters parameters = mCamera.getParameters();
List<Camera.Size> previewSizes = parameters.getSupportedPreviewSizes();
// You need to choose the most appropriate previewSize for your app
Camera.Size previewSize = previewSizes.get(2); // .... select one of previewSizes here
parameters.setPreviewSize(previewSize.width, previewSize.height);
mCamera.setParameters(parameters);
mCamera.startPreview();
}
@Override
public void surfaceChanged(SurfaceHolder arg0, int format, int width, int height) {
if (mCamera != null) {
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(
mSupportedPreviewSizes.get(0).width, mSupportedPreviewSizes.get(0).height);
requestLayout();
mCamera.setParameters(parameters);
mCamera.startPreview();
}
}
/** {@inheritDoc} */
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Camera.Parameters parameters = camera.getParameters();
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
Camera.Size size = getSmallestPreviewSize(width, height, parameters);
if (size != null) {
parameters.setPreviewSize(size.width, size.height);
Log.d(TAG, "Using width=" + size.width + " height=" + size.height);
}
camera.setParameters(parameters);
camera.startPreview();
}
